Nevada, beware of what 'works' for others and let your piloting experience tell you what may or may not work for YOU... The nature of your questions leads me to believe that your experience level is minimal at this point, thus my 02. This is not ment to be a slam to anyone, so take my 02 with a grain of salt...
Bike setup must conform to riders abilities/preferences. Suspension, jetting and gearing should be customized to meet a riders abilities/preferences and each can dramatically effect your machines performance.
For example, Midhigh might use gearing to adjust 'punch' where I might change jetting to get a harder or smoother hit earlier in the rpm range while retaining my wide ratio gearing.... Reesknight might carry a little more speed into a corner, round it off, and feather his way to a crowd waving launch... ALL of which may or may not work for you!
So, you could have 999 different responses to your question and they could all be correct for that particular rider/machine. I know a few local pros who could master most tracks on a pogo stick.. Take examples from other riders and learn what works for you, but do not get stuck on having a specific formula for success, it simply does not exist. :thumb: